Arc extinguishing assembly of circuit breaker

Abstract

The utility model relates to the technical field of circuit breaker arc extinguishing, in particular to a circuit breaker arc extinguishing assembly which comprises a circuit breaker arc extinguishing assembly body, two flash barriers are fixedly connected to one side of the interior of the circuit breaker arc extinguishing assembly body, and two smooth round rods are fixedly connected to the inner side face of the circuit breaker arc extinguishing assembly body. According to the utility model, the U-shaped clamping seat can be used for preliminarily positioning the arc chute sheet, and then the two elastic clamping vertical plates can be used for clamping and fixing the arc chute sheet, so that the two clamping vertical plates which are flexibly adjusted can also be adaptively clamped with the arc chute sheets with different specifications, and the arc chute sheets with different specifications can be clamped by the clamping vertical plates. The assembling effect and applicability of the circuit breaker arc extinguishing assembly are improved, other circuit breaker arc extinguishing assemblies do not need to be replaced, the cost is saved, the two frame plates can be limited and fixed through the two supporting bolts, the stability when the arc extinguishing grid pieces are assembled is ensured, and the arc extinguishing effect of the circuit breaker arc extinguishing assembly is prevented from being affected due to the fact that the arc extinguishing grid pieces are loosened.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker arc extinguishing technical field, specifically is circuit breaker arc extinguishing assembly. BACKGROUND

[0002] When short circuit or overload fault appears, arc will be generated in the circuit, because arc has the characteristics of high temperature and strong radiation, it is easy to cause fire, and arc will also damage equipment, therefore, arc extinguishing device is arranged in the circuit breaker to eliminate arc and protect equipment and personnel safety.

[0003] The prior art discloses patent application number "CN202420290549.8", arc extinguishing chamber assembly and circuit breaker, the arc extinguishing chamber assembly is detachably installed in the circuit breaker, the arc extinguishing chamber assembly includes installation assembly, arc leading assembly and arc extinguishing piece connected in turn along the first direction, the arc leading assembly is used for leading arc into the arc extinguishing piece to extinguish arc, the installation assembly includes fixing piece and sliding sheet, the sliding sheet is slidably connected to the fixing piece along the second direction, the fixing piece is used for detachable connection with the static contact assembly of the circuit breaker, and the sliding sheet is used for detachable connection with the moving contact assembly of the circuit breaker, in the installation state of the arc extinguishing chamber assembly, the static arc contact of the static contact assembly and the moving arc contact of the moving contact assembly are all arranged on the side of the sliding sheet close to the arc extinguishing piece along the first direction.

[0004] The arc extinguishing chamber assembly can only realize the convenient disassembly between the arc extinguishing chamber assembly and the contact assembly, but in actual use, because the circuit breaker arc extinguishing assembly can usually only be adapted to the arc extinguishing grid sheet with the same installation specification, when other specifications of arc extinguishing grid sheet are encountered, the new circuit breaker arc extinguishing assembly needs to be replaced, the assembly effect of the circuit breaker arc extinguishing assembly is reduced, the cost is increased, and therefore the applicability of the circuit breaker arc extinguishing assembly is affected, and the circuit breaker arc extinguishing assembly is inconvenient to use. Utility model content

[0005] The utility model aims at providing circuit breaker arc extinguishing assembly to solve the problems in the above background technology.

[0006] The purpose of the utility model can be realized by the following technical scheme:

[0007] Circuit breaker arc extinguishing assembly, including circuit breaker arc extinguishing assembly main part, one side fixed connection of the inside of circuit breaker arc extinguishing assembly main part has two arc separation plates, the inner side of circuit breaker arc extinguishing assembly main part is fixedly connected with two smooth round rods, the outer surface of two smooth round rods is slidably installed with two frame plates, two frame plates are uniformly fixedly connected with two first connecting springs between them;

[0008] The bottom end of the main body of the circuit breaker arc extinguishing assembly is fixedly provided with a fixed plate, the front side of the fixed plate is arrayedly connected with a U-shaped clamping base, the U-shaped clamping base is internally clamped with an arc extinguishing grid, the interiors of the two frame plates are fixedly installed with two connecting rods, the outer surfaces of the two connecting rods are slidably installed with sliding blocks, and the inner sides of the two sliding blocks are fixedly connected with clamping vertical plates for fixing the arc extinguishing grid.

[0009] Preferably, the upper side of the main body of the circuit breaker arc extinguishing assembly is slidably clamped with an insertion plate, the upper side of the insertion plate is fixedly connected with a protective top cover, the protective top cover is located above the arc extinguishing grid, and the two ends of the protective top cover are fixedly installed with side plates.

[0010] Preferably, the side of each of the two side plates is slidably installed with a movable insertion rod for fixing the protective top cover, one side of the movable insertion rod penetrates through the side plate and extends to the other side of the side plate, one side of each of the two movable insertion rods is fixedly connected with a circular plate, and a second connecting spring is fixedly installed between each of the two movable insertion rods and the side plate.

[0011] Preferably, the two ends of the main body of the circuit breaker arc extinguishing assembly are provided with embedded grooves, the embedded grooves are matched with the movable insertion rods, and the inner sides of the movable insertion rods are slidably clamped with the two ends of the main body of the circuit breaker arc extinguishing assembly through the embedded grooves.

[0012] Preferably, one side of each of the four sliding blocks is threadedly connected with a reinforcing bolt for fixing the sliding block, the U-shaped clamping base is located behind the arc extinguishing grid, the two ends of the main body of the circuit breaker arc extinguishing assembly are threadedly installed with support bolts for fixing the frame plates, and one side of the support bolt penetrates through the main body of the circuit breaker arc extinguishing assembly and extends to the inner side of the main body of the circuit breaker arc extinguishing assembly.

[0013] Preferably, the interior of the clamping vertical plate is provided with arrayed clamping grooves matched with the arc extinguishing grid, and one side of the arc extinguishing grid is clamped with the interior of the clamping vertical plate through the clamping grooves.

[0014] The circuit breaker arc extinguishing assembly has the advantages that:

[0015] 1. The U-shaped clamping base can be used for preliminarily positioning the arc extinguishing grid, then the two clamping vertical plates with elasticity can clamp and fix the arc extinguishing grid, the two clamping vertical plates with flexible adjustment can be matched with arc extinguishing grids of different specifications, the assembling effect and applicability of the circuit breaker arc extinguishing assembly are improved, other circuit breaker arc extinguishing assemblies need not be replaced, and cost is saved.

[0016] 2. The two support bolts can be used for limiting and fixing the two frame plates, the stability of the two clamping vertical plates when assembling the arc extinguishing grid is ensured, the arc extinguishing grid is prevented from loosening and affecting the arc extinguishing effect of the circuit breaker arc extinguishing assembly, the protective top cover also protects the circuit breaker arc extinguishing assembly, the circuit breaker arc extinguishing assembly is prevented from being damaged by external force, and the service life of the circuit breaker arc extinguishing assembly is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a utility model Figure 1 Schematic diagram of the middle frame plate and the first connecting spring;

[0020] Figure 3 This is a utility model Figure 1 Installation diagram of the central clamping vertical plate and U-shaped card holder;

[0021] Figure 4 This is a utility model Figure 3 Installation diagram of the middle slider and clamping vertical plate;

[0022] Figure 5 This is a utility model Figure 1 Schematic diagram of the structure of the middle insert plate and the protective top cover;

[0023] The attached figures are labeled as follows:

[0024] 1. Circuit breaker arc extinguishing assembly body; 2. Arc isolation plate; 3. Smooth round rod; 4. Frame plate; 5. First connecting spring; 6. Connecting rod; 7. Sliding block; 8. Clamping vertical plate; 9. Arc extinguishing grid plate; 10. Reinforcing bolt; 11. Fixing plate; 12. U-shaped bracket; 13. Support bolt; 14. Insert plate; 15. Protective top cover; 16. Side plate; 17. Movable insert rod; 18. Round plate; 19. Second connecting spring; 20. Embedded groove; 21. Slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 5As shown, the circuit breaker arc extinguishing assembly includes a circuit breaker arc extinguishing assembly body 1, two arc separation plates 2 are fixedly connected to one side inside the circuit breaker arc extinguishing assembly body 1, the arc separation plates 2 prevent arc from spewing out, protect equipment and operators, and can also improve arc cooling speed and increase arc extinguishing effect of the circuit breaker, two smooth round rods 3 are fixedly connected to the inner side of the circuit breaker arc extinguishing assembly body 1, two frame plates 4 are slidingly installed on the outer surfaces of the two smooth round rods 3, and two first connecting springs 5 are fixedly connected between the two frame plates 4;

[0027] A fixed plate 11 is fixedly arranged at the bottom end inside the circuit breaker arc extinguishing assembly body 1, U-shaped clamping seats 12 are arrayed on the front side of the fixed plate 11, arc extinguishing grid fins 9 are clamped in the U-shaped clamping seats 12, the two frame plates 4 with elasticity and the clamping vertical plates 8 moving forward and backward can be used to flexibly clamp arc extinguishing grid fins 9 of different specifications, the assembly effect of the arc extinguishing grid fins 9 is improved, and the assembly is time-saving and labor-saving, two connecting rods 6 are fixedly installed inside the two frame plates 4, sliding blocks 7 are slidingly installed on the outer surfaces of the two connecting rods 6, and the clamping vertical plates 8 for fixing the arc extinguishing grid fins 9 are fixedly connected to the inner sides of the two sliding blocks 7.

[0028] A plug-in plate 14 is slidingly clamped to the upper side of the circuit breaker arc extinguishing assembly body 1, a protective top cover 15 is fixedly connected to the upper side of the plug-in plate 14, the protective top cover 15 is located above the arc extinguishing grid fins 9, and side plates 16 are fixedly installed at the two ends of the protective top cover 15.

[0029] An activity plug-in rod 17 for fixing the protective top cover 15 is slidingly installed on one side of each of the two side plates 16, the activity plug-in rod 17 penetrates through the side plate 16 and extends to the other side of the side plate 16, a round plate 18 is fixedly connected to one side of each of the two activity plug-in rods 17, and a second connecting spring 19 is fixedly installed between each of the two activity plug-in rods 17 and the side plate 16, the plug-in plate 14 and the activity plug-in rod 17 can be used to conveniently clamp and fix the protective top cover 15, the protective top cover 15 can not only isolate arc but also be conveniently disassembled for maintenance of the circuit breaker arc extinguishing assembly, and safe use of the circuit breaker arc extinguishing assembly is ensured.

[0030] Embedding grooves 20 are formed at the two ends of the circuit breaker arc extinguishing assembly body 1, the embedding grooves 20 are matched with the activity plug-in rods 17, and the inner sides of the activity plug-in rods 17 are slidingly clamped to the two ends of the circuit breaker arc extinguishing assembly body 1 through the embedding grooves 20.

[0031] A reinforcing bolt 10 for fixing the sliding block 7 is threadedly connected to one side of each of the four sliding blocks 7, the U-shaped clamping seat 12 is located behind the arc extinguishing grid fin 9, a support bolt 13 for fixing the frame plate 4 is threadedly installed at each of the two ends of the circuit breaker arc extinguishing assembly body 1, and one side of the support bolt 13 penetrates through the circuit breaker arc extinguishing assembly body 1 and extends to the inner side of the circuit breaker arc extinguishing assembly body 1.

[0032] The inner part of the clamping vertical plate 8 is provided with an array of clamping grooves 21, which are matched with the arc extinguishing fins 9, and one side of the arc extinguishing fins 9 is clamped with the inner part of the clamping vertical plate 8 through the clamping grooves 21.

[0033] The working principle of the circuit breaker arc extinguishing assembly is as follows:

[0034] By clamping all the arc extinguishing fins 9 into the U-shaped clamping seat 12 of the fixed plate 11 in sequence, the U-shaped clamping seat 12 can be used for preliminary positioning of the arc extinguishing fins 9, then the two frame plates 4 provided with the first connecting springs 5 are moved on the two smooth round rods 3, so that the two frame plates 4 can be moved towards each other by the elastic force of the first connecting springs 5, so as to drive the two clamping vertical plates 8 to be clamped to the two ends of the arc extinguishing fins 9, for further clamping and fixing the arc extinguishing fins 9, then the two sliding blocks 7 of the two connecting rods 6 can be moved, so that the two sliding blocks 7 can drive the clamping vertical plates 8 to adjust the position, and then the two reinforcing bolts 10 are rotated for positioning the entire clamping vertical plate 8, so that the two clamping vertical plates 8 which are flexibly adjusted can be matched and clamped with arc extinguishing fins 9 of different specifications, the assembly effect and applicability of the circuit breaker arc extinguishing assembly are improved, other circuit breaker arc extinguishing assemblies do not need to be replaced, and cost is saved.

[0035] By rotating the two supporting bolts 13 in sequence, the two supporting bolts 13 are used for limiting and fixing the two frame plates 4, so as to ensure the stability of the two clamping vertical plates 8 when assembling the arc extinguishing fins 9, so as to avoid loosening of the arc extinguishing fins 9 and affect the arc extinguishing effect of the circuit breaker arc extinguishing assembly, then the plug-in plate 14 at the protective top cover 15 is inserted into the upper part of the circuit breaker arc extinguishing assembly main body 1, so that the elastic force of the second connecting spring 19 can be used to extend and retract the two movable insertion rods 17, so that the two movable insertion rods 17 with elastic force can be clamped into the embedded groove 20 of the circuit breaker arc extinguishing assembly main body 1, for limiting and fixing the protective top cover 15, so as to protect the circuit breaker arc extinguishing assembly by the protective top cover 15, avoid damage to the circuit breaker arc extinguishing assembly by external force, and prolong the service life of the circuit breaker arc extinguishing assembly.

[0036] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. Circuit breaker arc quenching assembly comprising a circuit breaker arc quenching assembly body (1), characterized in that: The inside of the circuit breaker arc extinguishing assembly body (1) is fixedly connected with two arc separation plates (2) on one side, the inner side of the circuit breaker arc extinguishing assembly body (1) is fixedly connected with two smooth round rods (3), two frame plates (4) are slidably installed on the outer surfaces of the two smooth round rods (3), and two first connecting springs (5) are fixedly connected between the two frame plates (4). The bottom end of the inside of the circuit breaker arc extinguishing assembly body (1) is fixedly provided with a fixed plate (11), the front side of the fixed plate (11) is arrayedly connected with a U-shaped clamping seat (12), the inside of the U-shaped clamping seat (12) is clamped with an arc extinguishing grid (9), two connecting rods (6) are fixedly installed in the interiors of the two frame plates (4), two sliding blocks (7) are slidably installed on the outer surfaces of the two connecting rods (6), and a clamping vertical plate (8) for fixing the arc extinguishing grid (9) is fixedly connected to the inner sides of the two sliding blocks (7).

2. The circuit breaker arc mitigation assembly of claim 1, wherein, The upper side of the circuit breaker arc extinguishing assembly body (1) is slidably clamped with a plug-in plate (14), the upper side of the plug-in plate (14) is fixedly connected with a protective top cover (15), the protective top cover (15) is located above the arc extinguishing grid (9), and both ends of the protective top cover (15) are fixedly installed with side plates (16).

3. The circuit breaker arc mitigation assembly of claim 2, wherein, The sides of the two side plates (16) are slidably installed with movable plug-in rods (17) for fixing the protective top cover (15), the sides of the movable plug-in rods (17) penetrate through the side plates (16) and extend to the other sides of the side plates (16), the sides of the two movable plug-in rods (17) are fixedly connected with circular plates (18), and second connecting springs (19) are fixedly installed between the two movable plug-in rods (17) and the side plates (16).

4. The circuit breaker arc extinguishing assembly of claim 3, wherein, Both ends of the circuit breaker arc extinguishing assembly body (1) are provided with embedded grooves (20), the embedded grooves (20) are matched with the movable plug-in rods (17), and the inner sides of the movable plug-in rods (17) are slidably clamped with both ends of the circuit breaker arc extinguishing assembly body (1) through the embedded grooves (20).

5. The circuit breaker arc mitigation assembly of claim 1, wherein, The sides of the four sliding blocks (7) are threadedly connected with reinforcing bolts (10) for fixing the sliding blocks (7), the U-shaped clamping seat (12) is located behind the arc extinguishing grid (9), and both ends of the circuit breaker arc extinguishing assembly body (1) are threadedly installed with support bolts (13) for fixing the frame plates (4), the sides of the support bolts (13) penetrate through the circuit breaker arc extinguishing assembly body (1) and extend to the inner sides of the circuit breaker arc extinguishing assembly body (1).

6. The circuit breaker arc mitigation assembly of claim 1, wherein, The inside of the clamping vertical plate (8) is provided with arrayed clamping grooves (21) matched with the arc extinguishing grid (9), and the side of the arc extinguishing grid (9) is clamped with the inside of the clamping vertical plate (8) through the clamping grooves (21).

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